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PVC/纳米SiO2表面处理及其超疏水性能研究

Superhydrophobic Surface of PVC Membrane Structure Composite Treated with Silica Nanoparticles
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摘要 利用NaOH溶液对PVC膜结构材料进行刻蚀,使其表面形成了崎岖的凹凸粗糙微观结构,有利于SiO2粒子的吸附、沉积;再通过在PVC膜结构材料表面微-纳双重结构的构建和低表面能物质的处理,实现了超疏水、自清洁功能。实验结果表明,调节n(NH3·H2O):n(TEOS)摩尔比控制晶核的形成数量,实现对SiO2粒子粒径的有效控制,当摩尔比为0.4:1时,制得了粒径为7080nm的纳米SiO2;经低表面能处理后,PVC表面能由40mN/m下降为5mN/m,水接触角由81°上升到了152°,呈现出超疏水、自清洁功能。 PVC membrane structure composite was etched with Na OH chemical-etching process and a micro-rough geometric structure was obtained, which is beneficial for the adsorption and deposition of SiO_2 particles. To achieve the superhydrophobic and self-clean functions, the PVC composites would be further treated through chemical composition and optimal micro-nano-binary structure together. The results show that the size of the Si O_2 nano-particles could be adjusted by the number of crystal nucleus through controlling the mole ratio between n(NH3·H2O):n(TEOS). When the mole ratio is 0.4:1, the size of Si O_2 nano-particles is ranged from 70 to 80 nm. After processing with the low-surface-energy materials, the surface energy of the PVC has fallen from 40 to 5 m N/m and the WCA increases from 81o to 152o, suggesting that the PVC membrane structure composite shows the superhydrophobic and self-cleaning functions.
作者 丁新波 仇巧华 李智慧 刘涛 张春山 韩建 Ding Xinbo;Chou Qiaohua;Li Zhihui;Liu Tao;Zhang Chunshan;Han Jian;Zhejiang Sci-Tech University;Key Laboratory of Industrial Textile Materials and Manufacturing Technology
出处 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2016年第S1期286-289,共4页 Rare Metal Materials and Engineering
基金 浙江省自然科学基金(LY14E030014) 浙江省“产业用纺织材料技术”重点科技创新团队子项目
关键词 自清洁 超疏水 表面处理 纳米SIO2 PVC膜结构材料 self-clean superhydrophobic surface treatment Si O2 nanoparticle PVC membrane structure composite
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参考文献4

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